My understanding was that it is off until turned on......The RR blurb seems to suggest the same......
I also seem to remember that it may only be the s/c that gets the enhanced throttle response and steering from an earlier post.....
Perhaps James at LPR can clarify !! ???
I binned my trial due to a blowout just before the journey...the ADP certainly did its job when the car was fishtailing.... so as far as i'm concerned the car performs better with it.... I paid £2k for it and i'm gonna dam well remember to just turn it on  2014.5 SDV6 AB Dynamic ... Fuji /Santorini Pan roof and 22's
2013 Porsche Boxster S 3.4
2014 Audi A3 S line Quattro
---------------------------------

I can't tell the difference with it on. Just had car serviced and this was one thing checked, all OK according to diagnostics etc. The Sport mode in auto certainly makes much more difference. SWMBO owns this car I get to drive occasionally

Not seen any real evidence that the steering and throttle changes are applied to anything other than the supercharged models. Certainly from driving my TDV8 there is no apparent change to these two items.

I think the TDV6 guys are just imagining it

^^^
It could be the placebo effect, I agree supacat, but I'm convinced it does change steering/throttle.

I will try and get a definitive answer. Someone from LR must know  ON THE WAY: BMW F21 M140i
MERCEDES GL350 - Metallic Navy Blue w/Grey interior

GOING: BMW F31 335D MSport+ xDrive Touring
GONE: Land Rover Discovery 4 HSE - Stornaway Grey w/Black Interior (wish we'd kept it )
GONE: BMW F10 520D MSport - Carbon Black
GONE:MY12 RRS SDV6 HSE Sumatra/Ivory/Grand Black Privacy glass